Feature Policy is a new header that allows a site to control which features and APIs can be used in the browser.

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IT security products have become as complex as the networks they’re trying to secure. At Sophos we know that the solution to complexity is not more complexity. We tackle security challenges with clarity and confidence, knowing that simple security is better security.We offer free security software so you can check for security risks, remove viruses and protect your network.

Warnings

Content-Security-Policy

This policy contains 'unsafe-inline' which is dangerous in the default-src directive. This policy contains 'unsafe-eval' which is dangerous in the default-src directive.

Upcoming Headers

Expect-CT

Expect-CT allows a site to determine if they are ready for the upcoming Chrome requirements and/or enforce their CT policy.

Additional Information

Server

Server value has been changed. Typically you will see values like "Microsoft-IIS/8.0" or "nginx 1.7.2".

X-Powered-By

X-Powered-By can usually be seen with values like "PHP/5.5.9-1ubuntu4.5" or "ASP.NET". Trying to minimise the amount of information you give out about your server is a good idea. This header seems to have been altered to remove such information, but could still be removed.

X-Frame-Options

X-Frame-Options tells the browser whether you want to allow your site to be framed or not. By preventing a browser from framing your site you can defend against attacks like clickjacking.

X-Content-Type-Options

X-Content-Type-Options stops a browser from trying to MIME-sniff the content type and forces it to stick with the declared content-type. The only valid value for this header is "X-Content-Type-Options: nosniff".

X-Xss-Protection

X-XSS-Protection sets the configuration for the cross-site scripting filters built into most browsers. The best configuration is "X-XSS-Protection: 1; mode=block".

Strict-Transport-Security

HTTP Strict Transport Security is an excellent feature to support on your site and strengthens your implementation of TLS by getting the User Agent to enforce the use of HTTPS.

Content-Security-Policy

Content Security Policy is an effective measure to protect your site from XSS attacks. By whitelisting sources of approved content, you can prevent the browser from loading malicious assets. Analyse this policy in more detail.

Referrer-Policy

Referrer Policy is a new header that allows a site to control how much information the browser includes with navigations away from a document and should be set by all sites.

X-Powered-By

X-Powered-By can usually be seen with values like "PHP/5.5.9-1ubuntu4.5" or "ASP.NET". Trying to minimise the amount of information you give out about your server is a good idea. This header seems to have been altered to remove such information, but could still be removed.